17381980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11287}}^1$

素因数の和:11314

約数の個数: 48

約数和(自身を含む): 45513216

約数和(自身を除く): 28131236

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11287, 22574, 45148, 56435, 79009, 112870, 124157, 158018, 225740, 248314, 316036, 395045, 496628, 620785, 790090, 869099, 1241570, 1580180, 1738198, 2483140, 3476396, 4345495, 8690990, 17381980]

約数ペア:

[(1, 17381980), (2, 8690990), (4, 4345495), (5, 3476396), (7, 2483140), (10, 1738198), (11, 1580180), (14, 1241570), (20, 869099), (22, 790090), (28, 620785), (35, 496628), (44, 395045), (55, 316036), (70, 248314), (77, 225740), (110, 158018), (140, 124157), (154, 112870), (220, 79009), (308, 56435), (385, 45148), (770, 22574), (1540, 11287)]